FMF Full Exhaust System Q4 Hex S/A Muffler & Power Bomb 2010-2013 Yamaha YZ250F
FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE.
The redesigned PowerBomb is a four-stroke header that incorporates FMF’s patented PowerBomb module at a precise location in the initial stage of the header. By positioning this “Bomb” at a key point in the system, increased performance and flow is achieved through the expansion and contraction of exhaust sonics through the system. Result is a flow increase of nearly 10%! The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity.
Additionally, the PowerBomb is a “pre-muffler” of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases). On some models, you can choose between a moto or supercross version. The supercross version is designed for more low to mid-range power where the moto version is focused in the mid to upper RPM range.
Q4 Hex S/A Muffler:
The FMF Q has always been in a league of its’ own and our latest Q4 is the most significant upgrade to date. You don’t need to settle for a plugged up moto muffler hampered by an insert when you can have a compliant muffler engineered for performance.
-Less sound equals more ground
-Meets USFS and FIM World Enduro sound regulations
-Power gains throughout the entire rpm range
-Spark arrestor included
-Pounds lighter than stock
-Rugged design for off-road endurance
-Only US manufacturer to offer dedicated quiet exhaust systems
-MADE IN THE USA